Bob's the winner! First on crash page. He claims, while doing a loop the plane quit responding to the transmitter. He refuses to take credit for this mishap. His story, "I passed the transmitter to a fellow pilot while it was still 10 feet from the ground, not my fault!"
Bob sent his transmitter to Horizon Hobby. They determined there was a malfunction in the transmitter. However, they could not determine "WHEN" the damage happened.